source: clfs-sysroot/BOOK/final-system/common/util-linux-ng.xml@ ecd7387

Last change on this file since ecd7387 was 12e6567, checked in by Joe Ciccone <jciccone@…>, 16 years ago

Added a sysroot wrapper.
Updated the build variables section of the book, each package uses its own.
  • Property mode set to 100644
File size: 27.0 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-util-linux-ng" role="wrap">
9 <?dbhtml filename="util-linux-ng.html"?>
10
11 <title>Util-linux-ng-&util-linux-ng-version;</title>
12
13 <indexterm zone="ch-system-util-linux-ng">
14 <primary sortas="a-Util-linux-ng">Util-linux-ng</primary>
15 </indexterm>
16
17 <sect2 role="package">
18 <title/>
19
20 <para>The Util-linux-ng package contains miscellaneous utility programs.
21 Among them are utilities for handling file systems, consoles, partitions,
22 and messages.</para>
23
24 </sect2>
25
26 &env-target;
27
28 <sect2 id="fhs-util-linux-ng" role="installation">
29 <title>FHS compliance notes</title>
30
31 <para>The FHS recommends using the <filename
32 class="directory">/var/lib/hwclock</filename> directory instead of the
33 usual <filename class="directory">/etc</filename> directory as the
34 location for the <filename>adjtime</filename> file. To make the
35 <command>hwclock</command> program FHS-compliant, run the following:</para>
36
37<screen><userinput>cp hwclock/hwclock.c{,.orig}
38sed -e 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
39 hwclock/hwclock.c.orig &gt; hwclock/hwclock.c
40mkdir -pv ${CLFS}/var/lib/hwclock</userinput></screen>
41
42 </sect2>
43
44 <sect2 role="installation">
45 <title>Installation of Util-linux-ng</title>
46
47 <para os="a">Prepare Util-linux-ng for compilation:</para>
48
49<screen os="b"><userinput>./configure --build=${CLFS_HOST} --host=${CLFS_TARGET} \
50 --enable-arch --enable-partx --disable-wall \
51 --enable-write --disable-makeinstall-chown</userinput></screen>
52
53 <variablelist os="c">
54 <title>The meaning of the configure options:</title>
55
56 <varlistentry>
57 <term><parameter>--enable-arch</parameter></term>
58 <listitem>
59 <para>This option allows the <command>arch</command> program to be
60 installed.</para>
61 </listitem>
62 </varlistentry>
63
64 <varlistentry>
65 <term><parameter>--enable-partx</parameter></term>
66 <listitem>
67 <para>Enables building the <command>addpart</command>, <command>delpart</command>,
68 <command>partx</command> programs.</para>
69 </listitem>
70 </varlistentry>
71
72 <varlistentry>
73 <term><parameter>--enable-write</parameter></term>
74 <listitem>
75 <para>This option allows the <command>write</command> program to be
76 installed.</para>
77 </listitem>
78 </varlistentry>
79
80 <varlistentry>
81 <term><parameter>--disable-wall</parameter></term>
82 <listitem>
83 <para>Disables building the <command>wall</command> program,
84 as the Sysvinit package installs its own version.</para>
85 </listitem>
86 </varlistentry>
87
88 </variablelist>
89
90 <para os="d">Compile the package:</para>
91
92<screen os="e"><userinput>make</userinput></screen>
93
94 <para os="f">Install the package:</para>
95
96<screen os="g"><userinput>make DESTDIR=${CLFS} install</userinput></screen>
97
98 <para os="h">Move the <command>logger</command> binary to
99 <filename class="directory">/bin</filename> as it is needed by the
100 CLFS-Bootscripts package:</para>
101
102<screen os="i"><userinput>mv -v ${CLFS}/usr/bin/logger ${CLFS}/bin</userinput></screen>
103
104 </sect2>
105
106 <sect2 id="contents-util-linux-ng" role="content">
107 <title>Contents of Util-linux-ng</title>
108
109 <segmentedlist>
110 <segtitle>Installed programs</segtitle>
111
112 <seglistitem>
113 <seg>addpart, agetty, blockdev, cal, cfdisk, chkdupexe, col, colcrt,
114 colrm, column, ctrlaltdel, cytune, ddate, delpart, dmesg, fdformat,
115 fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ionice,
116 ipcrm, ipcs, isosize, line, logger, look, losetup, mcookie, mkfs,
117 mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei, partx,
118 pg, pivot_root, readprofile, rename, renice, rev, rtcwake, script,
119 scriptreplay, setarch, setsid, setterm, sfdisk, swapoff (link to swapon),
120 swapon, tailf, taskset, tunelp, ul, umount, whereis, and write</seg>
121 </seglistitem>
122 </segmentedlist>
123
124 <variablelist>
125 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
126 <?dbfo list-presentation="list"?>
127 <?dbhtml list-presentation="table"?>
128
129 <varlistentry id="addpart">
130 <term><command>addpart</command></term>
131 <listitem>
132 <para>Informs the kernel of a new partition</para>
133 <indexterm zone="ch-system-util-linux-ng addpart">
134 <primary sortas="b-addpart">addpart</primary>
135 </indexterm>
136 </listitem>
137 </varlistentry>
138
139 <varlistentry id="agetty">
140 <term><command>agetty</command></term>
141 <listitem>
142 <para>Opens a tty port, prompts for a login name,
143 and then invokes the <command>login</command> program</para>
144 <indexterm zone="ch-system-util-linux-ng agetty">
145 <primary sortas="b-agetty">agetty</primary>
146 </indexterm>
147 </listitem>
148 </varlistentry>
149
150 <varlistentry id="blockdev">
151 <term><command>blockdev</command></term>
152 <listitem>
153 <para>Allows users to call block device ioctls from the command
154 line</para>
155 <indexterm zone="ch-system-util-linux-ng blockdev">
156 <primary sortas="b-blockdev">blockdev</primary>
157 </indexterm>
158 </listitem>
159 </varlistentry>
160
161 <varlistentry id="cal">
162 <term><command>cal</command></term>
163 <listitem>
164 <para>Displays a simple calendar</para>
165 <indexterm zone="ch-system-util-linux-ng cal">
166 <primary sortas="b-cal">cal</primary>
167 </indexterm>
168 </listitem>
169 </varlistentry>
170
171 <varlistentry id="cfdisk">
172 <term><command>cfdisk</command></term>
173 <listitem>
174 <para>Manipulates the partition table of the given device</para>
175 <indexterm zone="ch-system-util-linux-ng cfdisk">
176 <primary sortas="b-cfdisk">cfdisk</primary>
177 </indexterm>
178 </listitem>
179 </varlistentry>
180
181 <varlistentry id="chkdupexe">
182 <term><command>chkdupexe</command></term>
183 <listitem>
184 <para>Finds duplicate executables</para>
185 <indexterm zone="ch-system-util-linux-ng chkdupexe">
186 <primary sortas="b-chkdupexe">chkdupexe</primary>
187 </indexterm>
188 </listitem>
189 </varlistentry>
190
191 <varlistentry id="col">
192 <term><command>col</command></term>
193 <listitem>
194 <para>Filters out reverse line feeds</para>
195 <indexterm zone="ch-system-util-linux-ng col">
196 <primary sortas="b-col">col</primary>
197 </indexterm>
198 </listitem>
199 </varlistentry>
200
201 <varlistentry id="colcrt">
202 <term><command>colcrt</command></term>
203 <listitem>
204 <para>Filters <command>nroff</command> output for terminals
205 that lack some capabilities, such as overstriking and half-lines</para>
206 <indexterm zone="ch-system-util-linux-ng colcrt">
207 <primary sortas="b-colcrt">colcrt</primary>
208 </indexterm>
209 </listitem>
210 </varlistentry>
211
212 <varlistentry id="colrm">
213 <term><command>colrm</command></term>
214 <listitem>
215 <para>Filters out the given columns</para>
216 <indexterm zone="ch-system-util-linux-ng colrm">
217 <primary sortas="b-colrm">colrm</primary>
218 </indexterm>
219 </listitem>
220 </varlistentry>
221
222 <varlistentry id="column">
223 <term><command>column</command></term>
224 <listitem>
225 <para>Formats a given file into multiple columns</para>
226 <indexterm zone="ch-system-util-linux-ng column">
227 <primary sortas="b-column">column</primary>
228 </indexterm>
229 </listitem>
230 </varlistentry>
231
232 <varlistentry id="ctrlaltdel">
233 <term><command>ctrlaltdel</command></term>
234 <listitem>
235 <para>Sets the function of the Ctrl+Alt+Del key combination to a
236 hard or a soft reset</para>
237 <indexterm zone="ch-system-util-linux-ng ctrlaltdel">
238 <primary sortas="b-ctrlaltdel">ctrlaltdel</primary>
239 </indexterm>
240 </listitem>
241 </varlistentry>
242
243 <varlistentry id="cytune">
244 <term><command>cytune</command></term>
245 <listitem>
246 <para>Tunes the parameters of the serial line drivers for
247 Cyclades cards</para>
248 <indexterm zone="ch-system-util-linux-ng cytune">
249 <primary sortas="b-cytune">cytune</primary>
250 </indexterm>
251 </listitem>
252 </varlistentry>
253
254 <varlistentry id="ddate">
255 <term><command>ddate</command></term>
256 <listitem>
257 <para>Gives the Discordian date or converts the given Gregorian date
258 to a Discordian one</para>
259 <indexterm zone="ch-system-util-linux-ng ddate">
260 <primary sortas="b-ddate">ddate</primary>
261 </indexterm>
262 </listitem>
263 </varlistentry>
264
265 <varlistentry id="delpart">
266 <term><command>delpart</command></term>
267 <listitem>
268 <para>Asks the kernel to remove a partition</para>
269 <indexterm zone="ch-system-util-linux-ng delpart">
270 <primary sortas="b-delpart">delpart</primary>
271 </indexterm>
272 </listitem>
273 </varlistentry>
274
275 <varlistentry id="dmesg">
276 <term><command>dmesg</command></term>
277 <listitem>
278 <para>Dumps the kernel boot messages</para>
279 <indexterm zone="ch-system-util-linux-ng dmesg">
280 <primary sortas="b-dmesg">dmesg</primary>
281 </indexterm>
282 </listitem>
283 </varlistentry>
284
285 <varlistentry id="fdformat">
286 <term><command>fdformat</command></term>
287 <listitem>
288 <para>Low-level formats a floppy disk</para>
289 <indexterm zone="ch-system-util-linux-ng fdformat">
290 <primary sortas="b-fdformat">fdformat</primary>
291 </indexterm>
292 </listitem>
293 </varlistentry>
294
295 <varlistentry id="fdisk">
296 <term><command>fdisk</command></term>
297 <listitem>
298 <para>Manipulates the partition table of the given device</para>
299 <indexterm zone="ch-system-util-linux-ng fdisk">
300 <primary sortas="b-fdisk">fdisk</primary>
301 </indexterm>
302 </listitem>
303 </varlistentry>
304
305 <varlistentry id="flock">
306 <term><command>flock</command></term>
307 <listitem>
308 <para>Acquires a file lock and then executes a command with the lock
309 held</para>
310 <indexterm zone="ch-system-util-linux-ng flock">
311 <primary sortas="b-flock">flock</primary>
312 </indexterm>
313 </listitem>
314 </varlistentry>
315
316 <varlistentry id="fsck.cramfs">
317 <term><command>fsck.cramfs</command></term>
318 <listitem>
319 <para>Performs a consistency check on the Cramfs file system on the
320 given device</para>
321 <indexterm zone="ch-system-util-linux-ng fsck.cramfs">
322 <primary sortas="b-fsck.cramfs">fsck.cramfs</primary>
323 </indexterm>
324 </listitem>
325 </varlistentry>
326
327 <varlistentry id="fsck.minix">
328 <term><command>fsck.minix</command></term>
329 <listitem>
330 <para>Performs a consistency check on the Minix file system on the
331 given device</para>
332 <indexterm zone="ch-system-util-linux-ng fsck.minix">
333 <primary sortas="b-fsck.minix">fsck.minix</primary>
334 </indexterm>
335 </listitem>
336 </varlistentry>
337
338 <varlistentry id="getopt">
339 <term><command>getopt</command></term>
340 <listitem>
341 <para>Parses options in the given command line</para>
342 <indexterm zone="ch-system-util-linux-ng getopt">
343 <primary sortas="b-getopt">getopt</primary>
344 </indexterm>
345 </listitem>
346 </varlistentry>
347
348 <varlistentry id="hexdump">
349 <term><command>hexdump</command></term>
350 <listitem>
351 <para>Dumps the given file in hexadecimal or in another given
352 format</para>
353 <indexterm zone="ch-system-util-linux-ng hexdump">
354 <primary sortas="b-hexdump">hexdump</primary>
355 </indexterm>
356 </listitem>
357 </varlistentry>
358
359 <varlistentry id="hwclock">
360 <term><command>hwclock</command></term>
361 <listitem>
362 <para>Reads or sets the system's hardware clock, also called
363 the Real-Time Clock (RTC) or Basic Input-Output System (BIOS)
364 clock</para>
365 <indexterm zone="ch-system-util-linux-ng hwclock">
366 <primary sortas="b-hwclock">hwclock</primary>
367 </indexterm>
368 </listitem>
369 </varlistentry>
370
371 <varlistentry id="ionice">
372 <term><command>ionice</command></term>
373 <listitem>
374 <para>Gives and sets program I/O scheduling class and priority</para>
375 <indexterm zone="ch-system-util-linux-ng ionice">
376 <primary sortas="b-ionice">ionice</primary>
377 </indexterm>
378 </listitem>
379 </varlistentry>
380
381 <varlistentry id="ipcrm">
382 <term><command>ipcrm</command></term>
383 <listitem>
384 <para>Removes the given Inter-Process Communication (IPC) resource</para>
385 <indexterm zone="ch-system-util-linux-ng ipcrm">
386 <primary sortas="b-ipcrm">ipcrm</primary>
387 </indexterm>
388 </listitem>
389 </varlistentry>
390
391 <varlistentry id="ipcs">
392 <term><command>ipcs</command></term>
393 <listitem>
394 <para>Provides IPC status information</para>
395 <indexterm zone="ch-system-util-linux-ng ipcs">
396 <primary sortas="b-ipcs">ipcs</primary>
397 </indexterm>
398 </listitem>
399 </varlistentry>
400
401 <varlistentry id="isosize">
402 <term><command>isosize</command></term>
403 <listitem>
404 <para>Reports the size of an iso9660 file system</para>
405 <indexterm zone="ch-system-util-linux-ng isosize">
406 <primary sortas="b-isosize">isosize</primary>
407 </indexterm>
408 </listitem>
409 </varlistentry>
410
411 <varlistentry id="line">
412 <term><command>line</command></term>
413 <listitem>
414 <para>Copies a single line</para>
415 <indexterm zone="ch-system-util-linux-ng line">
416 <primary sortas="b-line">line</primary>
417 </indexterm>
418 </listitem>
419 </varlistentry>
420
421 <varlistentry id="logger">
422 <term><command>logger</command></term>
423 <listitem>
424 <para>Enters the given message into the system log</para>
425 <indexterm zone="ch-system-util-linux-ng logger">
426 <primary sortas="b-logger">logger</primary>
427 </indexterm>
428 </listitem>
429 </varlistentry>
430
431 <varlistentry id="look">
432 <term><command>look</command></term>
433 <listitem>
434 <para>Displays lines that begin with the given string</para>
435 <indexterm zone="ch-system-util-linux-ng look">
436 <primary sortas="b-look">look</primary>
437 </indexterm>
438 </listitem>
439 </varlistentry>
440
441 <varlistentry id="losetup">
442 <term><command>losetup</command></term>
443 <listitem>
444 <para>Sets up and controls loop devices</para>
445 <indexterm zone="ch-system-util-linux-ng losetup">
446 <primary sortas="b-losetup">losetup</primary>
447 </indexterm>
448 </listitem>
449 </varlistentry>
450
451 <varlistentry id="mcookie">
452 <term><command>mcookie</command></term>
453 <listitem>
454 <para>Generates magic cookies (128-bit random hexadecimal numbers) for
455 <command>xauth</command></para>
456 <indexterm zone="ch-system-util-linux-ng mcookie">
457 <primary sortas="b-mcookie">mcookie</primary>
458 </indexterm>
459 </listitem>
460 </varlistentry>
461
462 <varlistentry id="mkfs">
463 <term><command>mkfs</command></term>
464 <listitem>
465 <para>Builds a file system on a device (usually a hard disk
466 partition)</para>
467 <indexterm zone="ch-system-util-linux-ng mkfs">
468 <primary sortas="b-mkfs">mkfs</primary>
469 </indexterm>
470 </listitem>
471 </varlistentry>
472
473 <varlistentry id="mkfs.bfs">
474 <term><command>mkfs.bfs</command></term>
475 <listitem>
476 <para>Creates a Santa Cruz Operations (SCO) bfs file system</para>
477 <indexterm zone="ch-system-util-linux-ng mkfs.bfs">
478 <primary sortas="b-mkfs.bfs">mkfs.bfs</primary>
479 </indexterm>
480 </listitem>
481 </varlistentry>
482
483 <varlistentry id="mkfs.cramfs">
484 <term><command>mkfs.cramfs</command></term>
485 <listitem>
486 <para>Creates a cramfs file system</para>
487 <indexterm zone="ch-system-util-linux-ng mkfs.cramfs">
488 <primary sortas="b-mkfs.cramfs">mkfs.cramfs</primary>
489 </indexterm>
490 </listitem>
491 </varlistentry>
492
493 <varlistentry id="mkfs.minix">
494 <term><command>mkfs.minix</command></term>
495 <listitem>
496 <para>Creates a Minix file system</para>
497 <indexterm zone="ch-system-util-linux-ng mkfs.minix">
498 <primary sortas="b-mkfs.minix">mkfs.minix</primary>
499 </indexterm>
500 </listitem>
501 </varlistentry>
502
503 <varlistentry id="mkswap">
504 <term><command>mkswap</command></term>
505 <listitem>
506 <para>Initializes the given device or file to be used as a swap
507 area</para>
508 <indexterm zone="ch-system-util-linux-ng mkswap">
509 <primary sortas="b-mkswap">mkswap</primary>
510 </indexterm>
511 </listitem>
512 </varlistentry>
513
514 <varlistentry id="more">
515 <term><command>more</command></term>
516 <listitem>
517 <para>A filter for paging through text one screen at a time</para>
518 <indexterm zone="ch-system-util-linux-ng more">
519 <primary sortas="b-more">more</primary>
520 </indexterm>
521 </listitem>
522 </varlistentry>
523
524 <varlistentry id="mount">
525 <term><command>mount</command></term>
526 <listitem>
527 <para>Attaches the file system on the given device to a specified
528 directory in the file-system tree</para>
529 <indexterm zone="ch-system-util-linux-ng mount">
530 <primary sortas="b-mount">mount</primary>
531 </indexterm>
532 </listitem>
533 </varlistentry>
534
535 <varlistentry id="namei">
536 <term><command>namei</command></term>
537 <listitem>
538 <para>Shows the symbolic links in the given pathnames</para>
539 <indexterm zone="ch-system-util-linux-ng namei">
540 <primary sortas="b-namei">namei</primary>
541 </indexterm>
542 </listitem>
543 </varlistentry>
544
545 <varlistentry id="partx">
546 <term><command>partx</command></term>
547 <listitem>
548 <para>Tells the kernel about the presence and numbering of on-disk
549 partitions</para>
550 <indexterm zone="ch-system-util-linux-ng partx">
551 <primary sortas="b-partx">partx</primary>
552 </indexterm>
553 </listitem>
554 </varlistentry>
555
556 <varlistentry id="pg">
557 <term><command>pg</command></term>
558 <listitem>
559 <para>Displays a text file one screen full at a time</para>
560 <indexterm zone="ch-system-util-linux-ng pg">
561 <primary sortas="b-pg">pg</primary>
562 </indexterm>
563 </listitem>
564 </varlistentry>
565
566 <varlistentry id="pivot_root">
567 <term><command>pivot_root</command></term>
568 <listitem>
569 <para>Makes the given file system the new root file system of the
570 current process</para>
571 <indexterm zone="ch-system-util-linux-ng pivot_root">
572 <primary sortas="b-pivot_root">pivot_root</primary>
573 </indexterm>
574 </listitem>
575 </varlistentry>
576
577 <varlistentry id="readprofile">
578 <term><command>readprofile</command></term>
579 <listitem>
580 <para>Reads kernel profiling information</para>
581 <indexterm zone="ch-system-util-linux-ng readprofile">
582 <primary sortas="b-readprofile">readprofile</primary>
583 </indexterm>
584 </listitem>
585 </varlistentry>
586
587 <varlistentry id="rename">
588 <term><command>rename</command></term>
589 <listitem>
590 <para>Renames the given files, replacing a given string with
591 another</para>
592 <indexterm zone="ch-system-util-linux-ng rename">
593 <primary sortas="b-rename">rename</primary>
594 </indexterm>
595 </listitem>
596 </varlistentry>
597
598 <varlistentry id="renice">
599 <term><command>renice</command></term>
600 <listitem>
601 <para>Alters the priority of running processes</para>
602 <indexterm zone="ch-system-util-linux-ng renice">
603 <primary sortas="b-renice">renice</primary>
604 </indexterm>
605 </listitem>
606 </varlistentry>
607
608 <varlistentry id="rev">
609 <term><command>rev</command></term>
610 <listitem>
611 <para>Reverses the lines of a given file</para>
612 <indexterm zone="ch-system-util-linux-ng rev">
613 <primary sortas="b-rev">rev</primary>
614 </indexterm>
615 </listitem>
616 </varlistentry>
617
618 <varlistentry id="rtcwake">
619 <term><command>rtcwake</command></term>
620 <listitem>
621 <para>Enters a system sleep state until a specified wakeup time</para>
622 <indexterm zone="ch-system-util-linux-ng rtcwake">
623 <primary sortas="b-rtcwake">rtcwake</primary>
624 </indexterm>
625 </listitem>
626 </varlistentry>
627
628 <varlistentry id="script">
629 <term><command>script</command></term>
630 <listitem>
631 <para>Makes a typescript of a terminal session</para>
632 <indexterm zone="ch-system-util-linux-ng script">
633 <primary sortas="b-script">script</primary>
634 </indexterm>
635 </listitem>
636 </varlistentry>
637
638 <varlistentry id="scriptreplay">
639 <term><command>scriptreplay</command></term>
640 <listitem>
641 <para>Plays back typescripts created by <command>script</command></para>
642 <indexterm zone="ch-system-util-linux-ng scriptreplay">
643 <primary sortas="b-scriptreplay">scriptreplay</primary>
644 </indexterm>
645 </listitem>
646 </varlistentry>
647
648 <varlistentry id="setarch">
649 <term><command>setarch</command></term>
650 <listitem>
651 <para>Changes reported architecture in new program environment and
652 sets personality flags</para>
653 <indexterm zone="ch-system-util-linux-ng setarch">
654 <primary sortas="b-setarch">setarch</primary>
655 </indexterm>
656 </listitem>
657 </varlistentry>
658
659 <varlistentry id="setsid">
660 <term><command>setsid</command></term>
661 <listitem>
662 <para>Runs the given program in a new session</para>
663 <indexterm zone="ch-system-util-linux-ng setsid">
664 <primary sortas="b-setsid">setsid</primary>
665 </indexterm>
666 </listitem>
667 </varlistentry>
668
669 <varlistentry id="setterm">
670 <term><command>setterm</command></term>
671 <listitem>
672 <para>Sets terminal attributes</para>
673 <indexterm zone="ch-system-util-linux-ng setterm">
674 <primary sortas="b-setterm">setterm</primary>
675 </indexterm>
676 </listitem>
677 </varlistentry>
678
679 <varlistentry id="sfdisk">
680 <term><command>sfdisk</command></term>
681 <listitem>
682 <para>A disk partition table manipulator</para>
683 <indexterm zone="ch-system-util-linux-ng sfdisk">
684 <primary sortas="b-sfdisk">sfdisk</primary>
685 </indexterm>
686 </listitem>
687 </varlistentry>
688
689 <varlistentry id="swapoff">
690 <term><command>swapoff</command></term>
691 <listitem>
692 <para>Disables devices and files for paging and swapping</para>
693 <indexterm zone="ch-system-util-linux-ng swapoff">
694 <primary sortas="b-swapoff">swapoff</primary>
695 </indexterm>
696 </listitem>
697 </varlistentry>
698
699 <varlistentry id="swapon">
700 <term><command>swapon</command></term>
701 <listitem>
702 <para>Enables devices and files for paging and swapping and
703 lists the devices and files currently in use</para>
704 <indexterm zone="ch-system-util-linux-ng swapon">
705 <primary sortas="b-swapon">swapon</primary>
706 </indexterm>
707 </listitem>
708 </varlistentry>
709
710 <varlistentry id="tailf">
711 <term><command>tailf</command></term>
712 <listitem>
713 <para>Tracks the growth of a log file. Displays the last 10 lines
714 of a log file, then continues displaying any new entries in the
715 log file as they are created</para>
716 <indexterm zone="ch-system-util-linux-ng tailf">
717 <primary sortas="b-tailf">tailf</primary>
718 </indexterm>
719 </listitem>
720 </varlistentry>
721
722 <varlistentry id="taskset">
723 <term><command>taskset</command></term>
724 <listitem>
725 <para>Retrieves or sets a process's CPU affinity</para>
726 <indexterm zone="ch-system-util-linux-ng taskset">
727 <primary sortas="b-taskset">taskset</primary>
728 </indexterm>
729 </listitem>
730 </varlistentry>
731
732 <varlistentry id="tunelp">
733 <term><command>tunelp</command></term>
734 <listitem>
735 <para>Tunes the parameters of the line printer</para>
736 <indexterm zone="ch-system-util-linux-ng tunelp">
737 <primary sortas="b-tunelp">tunelp</primary>
738 </indexterm>
739 </listitem>
740 </varlistentry>
741
742 <varlistentry id="ul">
743 <term><command>ul</command></term>
744 <listitem>
745 <para>A filter for translating underscores into escape sequences
746 indicating underlining for the terminal in use</para>
747 <indexterm zone="ch-system-util-linux-ng ul">
748 <primary sortas="b-ul">ul</primary>
749 </indexterm>
750 </listitem>
751 </varlistentry>
752
753 <varlistentry id="umount">
754 <term><command>umount</command></term>
755 <listitem>
756 <para>Disconnects a file system from the system's file tree</para>
757 <indexterm zone="ch-system-util-linux-ng umount">
758 <primary sortas="b-umount">umount</primary>
759 </indexterm>
760 </listitem>
761 </varlistentry>
762
763 <varlistentry id="whereis">
764 <term><command>whereis</command></term>
765 <listitem>
766 <para>Reports the location of the binary, source, and man page
767 for the given command</para>
768 <indexterm zone="ch-system-util-linux-ng whereis">
769 <primary sortas="b-whereis">whereis</primary>
770 </indexterm>
771 </listitem>
772 </varlistentry>
773
774 <varlistentry id="write">
775 <term><command>write</command></term>
776 <listitem>
777 <para>Sends a message to the given user <emphasis>if</emphasis> that
778 user has not disabled receipt of such messages</para>
779 <indexterm zone="ch-system-util-linux-ng write">
780 <primary sortas="b-write">write</primary>
781 </indexterm>
782 </listitem>
783 </varlistentry>
784
785 </variablelist>
786
787 </sect2>
788
789</sect1>
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